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Merge pull request #4222 from Spacetech/directory_service_concurrent
Use ConcurrentDictionary's in DirectoryService
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commit
6cafc152b9
@ -1,6 +1,7 @@
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#pragma warning disable CS1591
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Linq;
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using MediaBrowser.Model.IO;
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@ -11,11 +12,11 @@ namespace MediaBrowser.Controller.Providers
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{
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private readonly IFileSystem _fileSystem;
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private readonly Dictionary<string, FileSystemMetadata[]> _cache = new Dictionary<string, FileSystemMetadata[]>(StringComparer.OrdinalIgnoreCase);
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private readonly ConcurrentDictionary<string, FileSystemMetadata[]> _cache = new ConcurrentDictionary<string, FileSystemMetadata[]>(StringComparer.OrdinalIgnoreCase);
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private readonly Dictionary<string, FileSystemMetadata> _fileCache = new Dictionary<string, FileSystemMetadata>(StringComparer.OrdinalIgnoreCase);
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private readonly ConcurrentDictionary<string, FileSystemMetadata> _fileCache = new ConcurrentDictionary<string, FileSystemMetadata>(StringComparer.OrdinalIgnoreCase);
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private readonly Dictionary<string, List<string>> _filePathCache = new Dictionary<string, List<string>>(StringComparer.OrdinalIgnoreCase);
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private readonly ConcurrentDictionary<string, List<string>> _filePathCache = new ConcurrentDictionary<string, List<string>>(StringComparer.OrdinalIgnoreCase);
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public DirectoryService(IFileSystem fileSystem)
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{
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@ -24,14 +25,7 @@ namespace MediaBrowser.Controller.Providers
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public FileSystemMetadata[] GetFileSystemEntries(string path)
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{
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if (!_cache.TryGetValue(path, out FileSystemMetadata[] entries))
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{
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entries = _fileSystem.GetFileSystemEntries(path).ToArray();
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_cache[path] = entries;
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}
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return entries;
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return _cache.GetOrAdd(path, p => _fileSystem.GetFileSystemEntries(p).ToArray());
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}
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public List<FileSystemMetadata> GetFiles(string path)
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@ -51,21 +45,19 @@ namespace MediaBrowser.Controller.Providers
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public FileSystemMetadata GetFile(string path)
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{
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if (!_fileCache.TryGetValue(path, out FileSystemMetadata file))
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var result = _fileCache.GetOrAdd(path, p =>
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{
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file = _fileSystem.GetFileInfo(path);
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var file = _fileSystem.GetFileInfo(p);
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return file != null && file.Exists ? file : null;
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});
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if (file != null && file.Exists)
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if (result == null)
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{
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_fileCache[path] = file;
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}
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else
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{
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return null;
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}
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// lets not store null results in the cache
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_fileCache.TryRemove(path, out _);
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}
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return file;
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return result;
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}
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public IReadOnlyList<string> GetFilePaths(string path)
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@ -73,14 +65,12 @@ namespace MediaBrowser.Controller.Providers
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public IReadOnlyList<string> GetFilePaths(string path, bool clearCache)
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{
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if (clearCache || !_filePathCache.TryGetValue(path, out List<string> result))
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if (clearCache)
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{
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result = _fileSystem.GetFilePaths(path).ToList();
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_filePathCache[path] = result;
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_filePathCache.TryRemove(path, out _);
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}
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return result;
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return _filePathCache.GetOrAdd(path, p => _fileSystem.GetFilePaths(p).ToList());
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}
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}
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}
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